I just found an excellent photo collection at The Catalyst, Famous people and their cats, which shows many people you would never have thought of as cat lovers, such as Frank Zappa, Truman Capote, Grace Kelly and John Travolta.
One of my favorites here is:
But wait, there's more at Famous people and their cats, part two! Sean Connery, and David Bowie are also cat lovers. So were John Lennon and Freddie Mercury.
Great work, Jenny. Hope you can find more of these.